Software APIs
device_sim_dv.c
1// Copyright lowRISC contributors (OpenTitan project).
2// Licensed under the Apache License, Version 2.0, see LICENSE for details.
3// SPDX-License-Identifier: Apache-2.0
4
5#include <stdbool.h>
6
7#include "dt/dt_rv_core_ibex.h"
9
10#include "rv_core_ibex_regs.h"
11#include "uart_regs.h"
12
13// Use the first dt_rv_core_ibex_t enum, i.e. the first Ibex core instance.
14static const dt_rv_core_ibex_t kRvCoreIbexDt = (dt_rv_core_ibex_t)0;
15static_assert(kDtRvCoreIbexCount == 1, "Only single core tops are supported");
16
17static inline uintptr_t rv_core_ibex_base(void) {
18 return (uintptr_t)dt_rv_core_ibex_primary_reg_block(kRvCoreIbexDt);
19}
20
21/**
22 * Device-specific symbol definitions for the DV simulation device.
23 */
24
26
27// TODO: DV testbench completely randomizes these. Need to add code to
28// retrieve these from a preloaded memory location set by the testbench.
29
30const uint64_t kClockFreqCpuMhz = 100;
31
32const uint64_t kClockFreqCpuHz = kClockFreqCpuMhz * 1000 * 1000;
33
34uint64_t to_cpu_cycles(uint64_t usec) { return usec * kClockFreqCpuMhz; }
35
36const uint64_t kClockFreqHiSpeedPeripheralHz = 96 * 1000 * 1000; // 96MHz
37
38const uint64_t kClockFreqPeripheralHz = 24 * 1000 * 1000; // 24MHz
39
40const uint64_t kClockFreqUsbHz = 48 * 1000 * 1000; // 48MHz
41
42const uint64_t kClockFreqAonHz = 200 * 1000; // 200kHz
43
44const uint64_t kUartBaudrate = 1 * 1000 * 1000; // 1Mbps
45
46const uint32_t kUartNCOValue =
47 CALCULATE_UART_NCO(kUartBaudrate, kClockFreqPeripheralHz);
48
49const uint32_t kUartBaud115K =
50 CALCULATE_UART_NCO(115200, kClockFreqPeripheralHz);
51const uint32_t kUartBaud230K =
52 CALCULATE_UART_NCO(115200 * 2, kClockFreqPeripheralHz);
53const uint32_t kUartBaud460K =
54 CALCULATE_UART_NCO(115200 * 4, kClockFreqPeripheralHz);
55const uint32_t kUartBaud921K =
56 CALCULATE_UART_NCO(115200 * 8, kClockFreqPeripheralHz);
57const uint32_t kUartBaud1M33 =
58 CALCULATE_UART_NCO(1333333, kClockFreqPeripheralHz);
59const uint32_t kUartBaud1M50 =
60 CALCULATE_UART_NCO(1500000, kClockFreqPeripheralHz);
61
63 kUartBaudrate, kClockFreqCpuHz, UART_PARAM_TX_FIFO_DEPTH);
64
65const uint32_t kAstCheckPollCpuCycles =
67
68uintptr_t device_test_status_address(void) {
69 return rv_core_ibex_base() + RV_CORE_IBEX_DV_SIM_WINDOW_REG_OFFSET;
70}
71
72uintptr_t device_log_bypass_uart_address(void) {
73 return rv_core_ibex_base() + RV_CORE_IBEX_DV_SIM_WINDOW_REG_OFFSET + 0x04;
74}
75
76void device_fpga_version_print(void) {}